Tube frame for axminster looms



Apr. 24, 1923.

C. H. COLLINS TUBE FRAME FOR AKMINS TER LOOMS Origin l Filed Jan. 12; 1922 INVENTOR.

ATTORNEY.

Patented Apr. 24, 1923.

UNi

OFFICE.

TUBE FRAME FOR AXMINSTEB- LOOMS.

Application filed. January 12, 1922, Serial No. 528,637. Renewed December 16, 1922.

To all whom it may concern:

Be it known that I, CHARLns H. COLLINS, a citizen of the United States of America, residing at West Albany, in the county of Albany and State of New York, have invented certain new and useful Improvements in Tube Frames for Axminster Looms, of which the followin is a specification.

My invention re ates to tube-frames for certain types of Axminster looms, particularly those having a width great enough to require the use therewith of a plurality of spools of tuft yarns, as for instance a loom adapted to weave a width of six feet and upward.

In Axminster looms with which tubeframes are used, the ends only of the tube-- frames are engaged by the loom mechanisms, and in the wider looms it is necessary in order to make use of the present types of the lighter weights of tube-frames, to provide a number of intermediate supports for said frames in order to prevent a detrimental amount of sag therein during the time it is in engagement with the loom mechanism. These intermediate supports provide for required alignment during certain phases of the loom movement but are unsatisfactory during others.

The tube-bars of tube-frames now used on wide looms are made wholly, or in part, of wood. Usually the tube bar is of wood reinforced with metal and in order to obtain sufficient strength to obviate the liability of breakage under usual conditions, it is necessary to make them of excess weight, or bulk, or both. If of excess bulk they are inconvenient to handle, and if the bulk be too great they cannot be used with success on the present types of looms. Being composed wholly or in part of wood, these bars are subject to shrinkage and change in shape due to atmospheric conditions," and where the wood and metal parts of the tube-frame are joined together looseness is bound to occur which interferes with the proper functioning of the frame.

'As the larger type of Axminster looms carry tubeframes to the number of five hundred and upward, it is clearly evident that even only a slight excess of weight in each tube-framewill make a decidedly appreciable excess load on the loom, and require a correspondingly greater strength in the loom parts, and increase in the power required to drive same. Numerous attempts have been made t obtain required rigidity in the longer tubeframes without undue increase in the weight or bulk thereof; but so far as I know none have been successful until I developed the trussed, all metal, tube-frame illustrated in the accompanying drawings, in which: i

Fig. 1, is a front elevation of my improved internally trussed tube-frame, parts broken away. a

Fig. 2, is an enlarged detail of one end of my tube-frame, one side cut away. Fig. 3,'is a vertical cross section.

Fig. 4, is an end elevation. Fig. 5, is a diagram of the truss arrangement.

Fig. 6, is a diagram of a modified truss arrangement.

The same reference characters refer to the same parts throughout theseveral Views.

Referring to the drawings, 2 is the channeled frame of the tube-bar, preferably made from sheet steel of suitable gage, and in this channel are fastened in any suitable manner a series of uprights 3, 4, and 5. The end uprights 3 and 5 having openings therethrough near the lower end thereof, and the center upright 4:, (or uprights 4, 4*) having an opening therethrough near the lower end thereof; A suitable truss rodv 6, passes through the openings in the uprights (note Figs. Sand 6) and the nuts 70, are tightened so as to cause tension enough thereon to overcome any tendency to sag which may be inherent in the channel 2, when it is loaded with the usual spools of tuft yarns.

The top member 7, of my tube-bar is of channeled cross-section, and has a narrow channel in reverse formed on each edge thereof as shown in Fig. 3. I prefer to make this top member in sections-a center section with a. length great enough to cover from one end upright to the other, and short sections to cover the remaining portions.

The free edges of the channel 2, fit into the reverse channels on the member 7 and when the two parts are properly secured together they form a very stiff, rigid, structure capable of sustaining the necessary weight without sagging, and without undue weight in the structure itself. The trussed tube-bar thus formed is then attached to the usual loom mechanism engaging bracket 9 and spring latch 8, adapted to coact with the tube frame engaging mechanism of the loom, and the usual yarn-tubes are fastened in place along one side thereof.

On the top of the tube-bar are mounted suitable hearings in which are journaled the usual tuft yarn spools 15. The usual spool brake mechanism, herein illustrated as the springs 16. are also mounted on the bar.

I claim:

1. In a tube frame for Axminster looms, :1 tube-bar comprising a channeled frame with a series of uprights attached therein, and a truss rod passing through said uprights and provided with means for applying tension longitudinally thereof; yarn tubes attached to and dependent from said tube-bar; and a top member with a channel formed along each side thereof, engaging with and fastened to the free edges of said channeled frame.

2. In a tube-frame for Axn'iinster looms, a tube-bar comprising a channeled frame with a series of uprights attached therein, and a truss rod passing through said. up rights and provided with means for apply- 'ing tension longitudinally thereof; yarn tubes attached to and dependent front said channeled frame; a top member covering and attached to said channel and having mounted thereon bearings adapted to have journaled therein the usual spools of tuft yarns, and a brake for applying friction to said spools; and mechanism at each end of said tube bar adapted to coact with the tube-frame engaging mechanism of the loom.

3. In a tube-frame for Axminster looms. a hollow tube-bar provided at each end with a bracket and a spring latch adapted to coact with the tube-frame engaging mechanism of the loom, with yarn-tubes attached to and dependent from said tubebar, and having a truss rod the ends thereof attached. inside said tube at a point near the top thereof, the center portion of the rod fastened near the bottom of said. tube so as to strengthen said tube-bar against vertically applied force the ends of the frame being supported.

4. In a tube frame forAxminster looms, a hollow tube-bar provided at each end with mechanism adapted to coact with the tubefra'me engaging mechanism of the loom; with yarn-tubes attached to and dependent from said tube-bar and having a. truss rod the ends thereof attached 'inside said tube at a point near the, top thereof, the center portion of said rod fastened near the bottom of the tube so as .to strengthen said tube-bar against vertically applied force the ends of the bar being supported: and bearings mountedabove and supported by said bar and adapted to support spools of tuft yarns.

5. A tube-bar for a tube-frame for Axminster looms, comprising a hollow tube with a truss rod'attached inside thereof the ends at a point near the top, and the center at a point-near the bottom of said tube, so that it will strengthen said tube against vertical downward pressure applied between the ends thereof the ends being supported.

6. A tube bar for a tube frame for AX- minster looms, comprising; a channeled member with a series of uprights attached inside thereof; and a second channeled member the edges thereof fastened to the free edges of said first mentioned channeled member. p

7 In a tube bar for a tube frame for Axminster looms, the combination of a channeled member the channel thereof closed by a second channeled member the edges of which are fastened to the free edges of the first mentioned channeled member, and yarn tubes attached to and dependent from one of said channeled members. I

In testimony whereof I have affixed my signature.

CHARLES H. COLLINS. 

